Tuyere-iron



B. LISTER.

TUYERE IRON.

No. 372,689. Patented Nov. 8, 1887.

m suummu Mum 1r [mum ATENT Fries.

BARKER LISTER, OF SAVANN A, ILLINOIS.

TUYERE-IRON.

SPECIFICATION forming part of Letters Patent No. 372,689, dated November 8, 1887.

(No model.)

T 0 all whom it may concern:

Be it known that I, BARKER LISTER, a citizen of the United States, residing at Savanna, in the county of Carroll and State of Illinois, have invented certain new and useful Improvements in Tuyere-Irons; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, which form part of this specification.

My invention relates to an improvement in that class of tuyeres in which air is forced into and through an air-chamber underneath the fire, and has for its object to provide means for directing the blast under all portions of the fire at the same time without permitting the melted metal to fall below into the chamber, and also an adjustable cup and valve by which the blast can be entirely shut off from the fire at will and the chambcr'cleared of einders by the blast of the bellows; and it consists in the construction hereinafter described,

and more particularly pointed out in the claims.

Referring to the drawings, Figurel is a perspective view of my tuyere. Fig. 2 is a part sectional vertical view on the line 2 z of Fig. 1, showing the position of theinterior parts of my device when the fire-valve is closed. Fig. 3 is a cross-sectional view on the line a: x of Fig. 2, showing the guide-bar. Fig. 4 is an enlarged view of the blast-valve. Fig. 5 is an enlarged view of the internal adjustable valve for closing or opening a tube in the lower part of the chamber, said valve being shown raised to open the tube.

Like letters of reference refer to corresponding parts in each figure of the drawings.

A represents a cylindrical casing having an enlarged top, B, with a concavoconveX central portion provided with an opening communicating with the air-chamber below. The lower end of the cylinder is enlarged at a, to give additional strength to the walls, and within the lower end there is fitted a flanged bottom, 0, which projects upward within and underneath to the periphery of the enlarged portion.

In the center of the flanged bottom there is provided a hole, a, in which a vertical rod, D, is placed, extending upward to the top B.

011 the upper end of the rod D there is secured an adjustable concavo-convex valve, E, the upper side of which is concave. This valve is provided with inclined holes 0 near its thin edges, extending downward and outward, communicating with the airchamber below to enable'the current of air-blast to in part pass under and up through the bed of coals 0n the Valve or cup E, while that forced over the sides will strike the sides of the fire. These holes are at a sufficient distance from the center of the upper concaved surface of the valve to avoid the liability of the melted iron passing through them to the chamber below. As the valve is raised it closes the central opening, b, of the top, and its thin edges are so extended as to fit well up on the convex under side of the top and bring the upper side of the perforations or holes e in the valve against the under side of the top, forming a practically air-tightjoint between the opening I) and the air-chamber below.

At about midway of the height of the cylinder a guide or centering bar, F, extends across the air-chamber, and is secured to its sides by screws or other suitable means. Through the enlarged center portion,f, of this bar the vertical rod D passes, and by means of the bar is held in a central position when being moved up and down, and also the upper side of the bar serves as a rest for the valveE when it is depressed or let down from the top.

In one side of the cylinder there is provided an opening about midway of its height for a blast-pipe, G, which communicates with the blowers or bellows for forcing air into the chamber. A valve-tube, H, extends from the upper side of this pipe, opening into it, in which there is avalve, h. The upper portion of this valve consists of a rod which fits closely into and fills the tube H, causing a sufficient degree of friction, when turned, to hold the valve in position, while its lower part constitutes a thin blade adapted to be turned in the blast-pipe to open or close the draft to regulate the current of air in the chamber and upon the fire in the concave top 13.

\Vithin one side of the bottom, and through the enlarged lower end of the cylinder, there is a tube, I, inclined downward and outward, through which the accumulated dust, cinders,

' or melted iron is expelled.

' in a post, It, secured to the bottom 0.

A lever-arm, J, is loosely, pivoted to the vertical rod D within theair-ehamber at a suitable distance above the bottom 0. This arm J has a pivotal bearing on a post, j, fastened to the bottom. Its extended bent portion t is pivotally connected with a second lever-arm, K, which also has a pivotal bearing The lever-arm K is extended outward and downward from the post, and has a valve, L, secured to its lower end, which fits into or covers the inner end of the tube I, so-that when the rod D is raised the valve E closes the central opening, I), of the top, the same action of the rod raising the valve L from the inner end of the tube I, leaving a clear communication outward through this tube at the bottom of the air-chamber to enable the dust and cinders to be blown out by forcing an air-blast into the chamber and out through this tube without disturbing the fire.

The vertical rod D may be raised and lowered by any suitable means desired -as a footlever, d, pivoted in one side of the lower end of the cylinder and extending outside the forge at-a convenient point for the foot of the operator, and adapted to be held in any desired position by any well known means-asbyaside ratchet-or the rod may be raised by wedges and held in a fixed position when frequent changes for blowing out the foreign matter in the chamber are not found necessary.

In operation, when the valve E is lowered and the tube I is closed, the blast of air is forced into the air-chamber through the pipes G, the strength of the current being regulated by the valve h, and passes over the edges and through the openings in valve Eto the fire on the upper side of the valve and within theinclined cover or top B.

When it is desired to clean the air-chamber of any accumulation of dust or cinders, the rod D is raised, closing the opening I) of the top and opening the tube I in the bottom, when a strong blast from the bellows or windwheel is forced into the air-chamber, creating an eddy, and .out through the tube I, carrying with it all foreign matter that may have accumulated therein.

I am aware that it is not new to form a tuyere-casing having a central rod with a pen i'orated valve to partially close the opening in the top; also a blast-pipe in the side of the casing having a valve; also a grate in an airchamber for the passage of cinders and dust and to support the end of the blast-pipe; also a valve rod reduced in diameter and its lower portion, so that when raised it leaves an opening in the bottom around the rod, and I do not, therefore, claim these broadly.

iuderhaving a eoneavo-convex top and a removable flanged bottom projecting upward within the cylinder, and underneath to the periphery of the enlarged lower end of the cylinder, said bottom having a central vertical rod extending through a gnide-bar across the air-chamber and provided with a valve adapted to'fit the convex under side of the top and close the opening therein, as and for the purpose set forth.

2. In a forge, the combination, with a cylinder having a concavo-convex valve therein provided with inclined holes near its thin edge, the valve being adapted to close an opening in thetop substantially air-tight by the adjustment of a rod underneath, of a blast-pipe in one side of theair-chamber having a tube opening into the pipe, said tube being provided with afriction-rod to hold the valve in position in the pipe to regulate the current of air to the chamber, as and for the purpose set forth.

3. The combination, with a tuyere-casing having a valve adapted to lit the convex under side of the top and close an opening therein by adjustment on a vertical rod through the bottom of the chamber and a guide-bar, of a valve connected with the rod for opening the wastepipe in one side of the bottom when the rod is adjusted to close the opening in the top, as and forthe purpose set forth.

4. The combination,with atnyerecasinghaving a central rod through the bottom and a guidebar for adjusting a valve to close an I opening in the top' of the casing, of a leverarm pivoted to the vertical valve-rod and to a second lever arm adapted to close a valve over the waste-pipe in one side of the bottom when the vertical rod is adjusted to close the opening in the top, as and for the purpose set forth.

5. In a forge, the combination, with a casing, of a valve with inclined holes near its edge, a vertical valve-rod, aguide-bar on the vertical rod, a blast-pipe in the side of the cylinder having a valve therein, and a wastepipe passing through the bottom and side of the cylinder, and a lever-arm pivoted to the vertical valve-rod having a pivoted bearing on a post in the bottom, with its opposite end pivoted to a'second lever-arm having a valve attached to it for opening and closing the waste-pipe, as and for the purpose set forth.

In testimony whereof I affix my signature in presence of two witnesses.

BARKER LISTER. Witnesses:

SIMON GREENLEAF, T. 'I. GREENLEAF. 

